/**
* @author Shang Liang
* 

* The MIT License

* Copyright (c) <2008> <Shang Liang>

* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:

* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.

* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.

*/

package com.dita{

	/**
	 * StringUtil Class: provide some common function to manipulate strings
	 */
	public class StringUtil {
		/**
		 * remove white spaces at the beginning and the end of a string
		 * @param	str		input string
		 * @return trimmed string
		 */
		public static function trim(str:String) :String
		{
			// remove leading white space
			str = str.replace(/^\s*/, "");
			// remove trailing white space
			str = str.replace(/\s*$/,"");
			return str;
		}
		/**
		 * split CSV, split comma separated string, some words are wraped with double quotes and some may not, need to deal with that
		 * @param	str		input string
		 * @return	an arrow of strings, without quotes
		 */
		public static function sliptCSV(str:String):Array
		{
			var strArr:Array = str.split(",");
			var returnArr:Array = new Array();
			for (var i:int = 0; i < strArr.length; i++)
			{
				// trim it
				var str:String = trim(strArr[i]);
				// remove leading quote
				str = str.replace(/^[\"\']*/, "");
				// remove trailing quote
				str = str.replace(/[\"\']*$/, "");
				// make sure not empty
				if (str.length > 0)
				{
					returnArr.push(str);
				}
			}			
			return returnArr;
		}
		
	}
	
}
